"Sunset View"
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Sunset View is of interest for at least two reasons. One, it is a beautiful place to view a sunset and it is also a great place to view what geologists call an "unconformity". An "unconformity" is an absence of part of the geological record. This absence can be caused by a lack of deposits during that time period or uneven erosion. Sunset View has an easily observable "unconformity". The lighter colored rock you see in Photo 2 is Entrada Sandstone (165 to 170 million years old), which is laying directly on top of 1.75 billion year old rock. This indicates a gap in the geologic record of over 1 billion years.